Analysis of daylighting control systems in 20 office and public spaces in Minnesota and Wisconsin shows that while the automatic daylight harvesting schemes are helping to reduce lighting energy in the buildings, most are not achieving optimal performance, according to a new study by the Energy Center of Wisconsin (ECW).
According to ECW, the median daylighting control system studied was saving 23% of lighting energy, including impacts on heating and cooling. This translated to 915 kWh saved for every kW of lighting controlled. But the average effectiveness (the energy saved versus energy saved with ideal control) of the controls was only 51%. This meant that almost half of the potential savings from these controls was not captured due to imperfect controls operation. Even worse, four of the 20 spaces studied had zero savings.
The low level of effectiveness, says ECW, is evidence of a lack of controls execution. The findings show that successful implementation of automatic daylighting control requires a significant commissioning effort to reach full energy-savings potential.
Read the full daylighting commissioning report from the Energy Center of Wisconsin.
As part of the report, ECW developed a tip sheet on commissioning and calibration and function testing of lighting controls. Recommendations include assigning a single person of the construction team to be responsible for verifying completion of all steps in the daylighting commissioning process, and proper training of the building owner/operator on the controls equipment and systems. Download the tip sheet (PDF)
(http://www.ecw.org/project.php?workid=1&resultid=494)
Related Stories
Sponsored | Metals | Mar 10, 2015
Metal Building Systems: A Rising Star in the Market
A new report by the Metal Building Manufacturer's Association explains the entity's efforts in refining and extending metal building systems as a construction choice.
Retail Centers | Mar 10, 2015
Retrofit projects give dying malls new purpose
Approximately one-third of the country’s 1,200 enclosed malls are dead or dying. The good news is that a sizable portion of that building stock is being repurposed.
Retail Centers | Mar 10, 2015
Orlando's Skyscraper to be world's tallest roller coaster
The Skyscraper is expected to begin construction later this year, and open in 2016. It will stand at 570 feet.
Museums | Mar 9, 2015
Architecture based on astronomy principles for new planetarium in Shanghai
The ancient Chinese civilization left some of the earliest records of humans studying the stars and skies. To exhibit this long history, a new planetarium and astronomy museum is planned for construction in Shanghai.
Architects | Mar 9, 2015
Study explores why high ceilings are popular
High ceilings give us a sense of freedom, new research finds
Cultural Facilities | Mar 9, 2015
London council nixes plans to rebuild the Crystal Palace
Plans for the new Crystal Palace Park were scrapped when the city and the project's developer could come to an agreement before the 16-month exclusivity contract expired.
Office Buildings | Mar 7, 2015
Chance encounters in workplace design: The winning ticket to the innovation lottery?
The logic behind the push to cultivate chance encounters supposes that innovation is akin to a lottery. But do chance encounters reliably and consistently yield anything of substance?
Architects | Mar 6, 2015
Study suggests our brains prefer curvy architecture
A research team at the University of Toronto at Scarborough worked with several European designers to see what sort of spaces pleases our brains more. Their finding: People are far more likely to call a room beautiful when its design is round instead of linear.
Justice Facilities | Mar 5, 2015
New courthouse blossoms into a civic space for one California town
The building's canopy suggests classical courthouse features of front porch and portico. It also helps connect the building with a public plaza that has re-centered civic activity and public gathering for the town.
Justice Facilities | Mar 5, 2015
State of the state: How state governments are funding construction projects
State budget shortfalls are making new construction and renovation projects a tough sell, leading lawmakers to seek alternative funding for these jobs.